Re: [PATCH v5 06/12] arm64: elf: Enable BTI at exec based on ELF program properties

From: kbuild test robot
Date: Fri Jan 24 2020 - 14:14:04 EST

Hi Mark,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on asm-generic/master]
[also build test ERROR on kvmarm/next linus/master v5.5-rc7]
[cannot apply to arm64/for-next/core arm-perf/for-next/perf next-20200124]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url: https://github.com/0day-ci/linux/commits/Mark-Brown/arm64-ARMv8-5-A-Branch-Target-Identification-support/20200124-203746
base: https://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic.git master
config: arm64-allnoconfig (attached as .config)
compiler: aarch64-linux-gcc (GCC) 7.5.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
GCC_VERSION=7.5.0 make.cross ARCH=arm64

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@xxxxxxxxx>

All errors (new ones prefixed by >>):

In file included from include/linux/module.h:18:0,
from include/linux/kallsyms.h:13,
from include/linux/ftrace.h:11,
from include/linux/perf_event.h:49,
from include/kvm/arm_pmu.h:10,
from arch/arm64/include/asm/kvm_host.h:37,
from include/linux/kvm_host.h:36,
from arch/arm64/kernel/asm-offsets.c:14:
>> include/linux/elf.h:79:19: error: redefinition of 'arch_parse_elf_property'
static inline int arch_parse_elf_property(u32 type, const void *data,
^~~~~~~~~~~~~~~~~~~~~~~
In file included from include/linux/elf.h:6:0,
from include/linux/module.h:18,
from include/linux/kallsyms.h:13,
from include/linux/ftrace.h:11,
from include/linux/perf_event.h:49,
from include/kvm/arm_pmu.h:10,
from arch/arm64/include/asm/kvm_host.h:37,
from include/linux/kvm_host.h:36,
from arch/arm64/kernel/asm-offsets.c:14:
arch/arm64/include/asm/elf.h:241:19: note: previous definition of 'arch_parse_elf_property' was here
static inline int arch_parse_elf_property(u32 type, const void *data,
^~~~~~~~~~~~~~~~~~~~~~~
make[2]: *** [arch/arm64/kernel/asm-offsets.s] Error 1
make[2]: Target '__build' not remade because of errors.
make[1]: *** [prepare0] Error 2
make[1]: Target 'prepare' not remade because of errors.
make: *** [sub-make] Error 2
115 real 3 user 4 sys 7.44% cpu make prepare

vim +/arch_parse_elf_property +79 include/linux/elf.h

efb25e29b815dd Dave Martin 2020-01-22 77
efb25e29b815dd Dave Martin 2020-01-22 78 #ifndef CONFIG_ARCH_USE_GNU_PROPERTY
efb25e29b815dd Dave Martin 2020-01-22 @79 static inline int arch_parse_elf_property(u32 type, const void *data,
efb25e29b815dd Dave Martin 2020-01-22 80 size_t datasz, bool compat,
efb25e29b815dd Dave Martin 2020-01-22 81 struct arch_elf_state *arch)
efb25e29b815dd Dave Martin 2020-01-22 82 {
efb25e29b815dd Dave Martin 2020-01-22 83 return 0;
efb25e29b815dd Dave Martin 2020-01-22 84 }
efb25e29b815dd Dave Martin 2020-01-22 85 #else
efb25e29b815dd Dave Martin 2020-01-22 86 extern int arch_parse_elf_property(u32 type, const void *data, size_t datasz,
efb25e29b815dd Dave Martin 2020-01-22 87 bool compat, struct arch_elf_state *arch);
efb25e29b815dd Dave Martin 2020-01-22 88 #endif
efb25e29b815dd Dave Martin 2020-01-22 89

:::::: The code at line 79 was first introduced by commit
:::::: efb25e29b815ddf0dd1bbe3728659da08c80fa14 ELF: Add ELF program property parsing support

:::::: TO: Dave Martin <Dave.Martin@xxxxxxx>
:::::: CC: 0day robot <lkp@xxxxxxxxx>

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